A report from the Washington Examiner says Trump representatives told Senate Republicans that the campaign "won't have much money to spend fending off attacks from Hillary Clinton" before the Republican National Convention in July.

Trump officially secured the party's nomination for president last week. Before that, the real-estate mogul's campaign said it would partner with the Republican National Committee to raise as much as $1 billion for the general election.

Anti-Trump protesters (L) clash with Donald Trump supporters (C) outside the Anaheim Convention Center during a rally for Republican presidential candidate Donald Trump on May 25, 2016 in Anaheim, California.
Police were on high alert one day after violence marred a Trump rally in the southwestern state of New Mexico, where anti-Trump protesters hurled rocks and police fired smoke grenades in efforts to rein in the chaos. Dozens of security personnel including police on horseback maintained control in Anaheim, although some skirmishes broke out between Trump opponents and his backers as protesters chanted expletives about the brash billionaire. At least two arrests were made. / AFP / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

Anti-Trump protesters stand outside the Anaheim Convention Center following a rally for Republican presidential candidate Donald Trump on May 25, 2016 in Anaheim, California.
Police were on high alert one day after violence marred a Trump rally in the southwestern state of New Mexico, where anti-Trump protesters hurled rocks and police fired smoke grenades in efforts to rein in the chaos. Dozens of security personnel including police on horseback maintained control in Anaheim, although some skirmishes broke out between Trump opponents and his backers as protesters chanted expletives about the brash billionaire. At least two arrests were made. / AFP / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

Police watch as an anti-Trump protester shouts abuse at a parking lot full of Trump supporters waiting for permission to leave (back) outside the Anaheim Convention Center after a rally for Republican presidential candidate Donald Trump on May 25, 2016 in Anaheim, California.
Police were on high alert one day after violence marred a Trump rally in the southwestern state of New Mexico, where anti-Trump protesters hurled rocks and police fired smoke grenades in efforts to rein in the chaos. Dozens of security personnel including police on horseback maintained control in Anaheim, although some skirmishes broke out between Trump opponents and his backers as protesters chanted expletives about the brash billionaire. At least two arrests were made. / AFP / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

ANAHEIM, CA - MAY 25: Police force protesters down a street, away from Trump supporters jeering from a parking structure, near a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked in protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary. (Photo by David McNew/Getty Images)

ANAHEIM, CA - MAY 25: A protester punches a Donald Trump pinata near a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked in protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary. (Photo by David McNew/Getty Images)

ANAHEIM, CA - MAY 25: Anti-Trump protesters and Trump supporters clash outside a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked in protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary. (Photo by David McNew/Getty Images)

ANAHEIM, CA - MAY 25: Protesters stomp on a Donald Trump pinata near a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked in protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary. (Photo by David McNew/Getty Images)

ANAHEIM, CA - MAY 25: An anti-Trump protester (L) and a Trump support clash outside a campaign rally by presumptive GOP presidential candidate Donald Trump at the Anaheim Convention Center on May 25, 2016 in Anaheim, California. Previous visits by the candidate to Orange County have sparked in protests that resulted in some arrests. The presidential candidates are campaigning in Southern California for the June 7 California primary. (Photo by David McNew/Getty Images)

Police watch as anti-Trump protesters unfurl the Mexican flag in front of a parking lot full of Trump supporters waiting for permission to leave (back) outside the Anaheim Convention Center after a rally for Republican presidential candidate Donald Trump on May 25, 2016 in Anaheim, California.
Police were on high alert one day after violence marred a Trump rally in the southwestern state of New Mexico, where anti-Trump protesters hurled rocks and police fired smoke grenades in efforts to rein in the chaos. Dozens of security personnel including police on horseback maintained control in Anaheim, although some skirmishes broke out between Trump opponents and his backers as protesters chanted expletives about the brash billionaire. At least two arrests were made. / AFP / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

Police arrest a protestor during an anti-Trump demonstration outside the Anaheim Convention Center prior to a rally for Republican presidential candidate Donald Trump on May 25, 2016 in Anaheim, California.
Police were on high alert one day after violence marred a Trump rally in the southwestern state of New Mexico, where anti-Trump protesters hurled rocks and police fired smoke grenades in efforts to rein in the chaos. Dozens of security personnel including police on horseback maintained control in Anaheim, although some skirmishes broke out between Trump opponents and his backers as protesters chanted expletives about the brash billionaire. At least two arrests were made. / AFP / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

Anti-Trump protesters stand outside the Anaheim Convention Center during a rally for Republican presidential candidate Donald Trump on May 25, 2016 in Anaheim, California.
Police were on high alert one day after violence marred a Trump rally in the southwestern state of New Mexico, where anti-Trump protesters hurled rocks and police fired smoke grenades in efforts to rein in the chaos. Dozens of security personnel including police on horseback maintained control in Anaheim, although some skirmishes broke out between Trump opponents and his backers as protesters chanted expletives about the brash billionaire. At least two arrests were made. / AFP / Mark Ralston (Photo credit should read MARK RALSTON/AFP/Getty Images)

Up Next

See Gallery

Discover More Like This

HIDE CAPTION

SHOW CAPTION

of

SEE ALL

BACK TO SLIDE

According to the Examiner report published Friday, the notice from Trump's campaign came after his senior adviser, Paul Manafort, met with some of the party's leaders last week.

"They know that they're not going to have enough money to be on TV in June and probably most of July until they actually accept the nomination and get RNC funds," the Examiner reported, citing an unnamed GOP source familiar with Manafort's comments.